OMWFilter 210 Replacement Filter Compatible with AprilAire Air Purifier Models 1210 1620 2210 2216 3210 4200 2200 Upgrade Kit 1213, Merv 11 Whole House Furnace Filters 20x25x4, 2-Pack

COMPABILITY: This OMWFilter furnace filter is compatible with AprilAire Whole House Air Purifier Models, including 1210, 1620, 2120, 2200, 2210, 2216, 3210, 4200, 2200 with Upgrade Kit 1213. Please ensure to check your model number before placing an order MERV RATING 11: These HVAC filters feature Merv 11 filtration material, capable of filtering 85% of 3-10μm particles, 65% of 1-3μm particles and 20% of 0.3-1μm particles FOR OPTIMAL PERFORMANCE: The primary cause of filtration inefficiency is clogging of the filters. To ensure optimal performance, it is recommended to replace the filter every 6-12 months, depending on the quality of the air and frequency of use EASY INSTALLATION: Designed for hassle-free setup, this 210 replacement filter slides into place effortlessly, saving you time and effort NOMINAL AC FILTER SIZE: 20 x 25 x 4 inches (Note: Nominal size is an industry-standard measurement system designed to help you quickly identify the correct replacement filter. It is not the exact physical dimensions of the filter)